mirror of
https://github.com/opencv/opencv.git
synced 2024-11-27 12:40:05 +08:00
338 lines
9.0 KiB
C++
338 lines
9.0 KiB
C++
#include "opencv2/imgcodecs.hpp"
|
|
#include "opencv2/highgui/highgui.hpp"
|
|
#include "opencv2/imgproc/imgproc.hpp"
|
|
|
|
#include <iostream>
|
|
|
|
using namespace std;
|
|
using namespace cv;
|
|
|
|
static void help()
|
|
{
|
|
cout << "\nThis program demonstrates GrabCut segmentation -- select an object in a region\n"
|
|
"and then grabcut will attempt to segment it out.\n"
|
|
"Call:\n"
|
|
"./grabcut <image_name>\n"
|
|
"\nSelect a rectangular area around the object you want to segment\n" <<
|
|
"\nHot keys: \n"
|
|
"\tESC - quit the program\n"
|
|
"\tr - restore the original image\n"
|
|
"\tn - next iteration\n"
|
|
"\n"
|
|
"\tleft mouse button - set rectangle\n"
|
|
"\n"
|
|
"\tCTRL+left mouse button - set GC_BGD pixels\n"
|
|
"\tSHIFT+left mouse button - set CG_FGD pixels\n"
|
|
"\n"
|
|
"\tCTRL+right mouse button - set GC_PR_BGD pixels\n"
|
|
"\tSHIFT+right mouse button - set CG_PR_FGD pixels\n" << endl;
|
|
}
|
|
|
|
const Scalar RED = Scalar(0,0,255);
|
|
const Scalar PINK = Scalar(230,130,255);
|
|
const Scalar BLUE = Scalar(255,0,0);
|
|
const Scalar LIGHTBLUE = Scalar(255,255,160);
|
|
const Scalar GREEN = Scalar(0,255,0);
|
|
|
|
const int BGD_KEY = EVENT_FLAG_CTRLKEY;
|
|
const int FGD_KEY = EVENT_FLAG_SHIFTKEY;
|
|
|
|
static void getBinMask( const Mat& comMask, Mat& binMask )
|
|
{
|
|
if( comMask.empty() || comMask.type()!=CV_8UC1 )
|
|
CV_Error( Error::StsBadArg, "comMask is empty or has incorrect type (not CV_8UC1)" );
|
|
if( binMask.empty() || binMask.rows!=comMask.rows || binMask.cols!=comMask.cols )
|
|
binMask.create( comMask.size(), CV_8UC1 );
|
|
binMask = comMask & 1;
|
|
}
|
|
|
|
class GCApplication
|
|
{
|
|
public:
|
|
enum{ NOT_SET = 0, IN_PROCESS = 1, SET = 2 };
|
|
static const int radius = 2;
|
|
static const int thickness = -1;
|
|
|
|
void reset();
|
|
void setImageAndWinName( const Mat& _image, const string& _winName );
|
|
void showImage() const;
|
|
void mouseClick( int event, int x, int y, int flags, void* param );
|
|
int nextIter();
|
|
int getIterCount() const { return iterCount; }
|
|
private:
|
|
void setRectInMask();
|
|
void setLblsInMask( int flags, Point p, bool isPr );
|
|
|
|
const string* winName;
|
|
const Mat* image;
|
|
Mat mask;
|
|
Mat bgdModel, fgdModel;
|
|
|
|
uchar rectState, lblsState, prLblsState;
|
|
bool isInitialized;
|
|
|
|
Rect rect;
|
|
vector<Point> fgdPxls, bgdPxls, prFgdPxls, prBgdPxls;
|
|
int iterCount;
|
|
};
|
|
|
|
void GCApplication::reset()
|
|
{
|
|
if( !mask.empty() )
|
|
mask.setTo(Scalar::all(GC_BGD));
|
|
bgdPxls.clear(); fgdPxls.clear();
|
|
prBgdPxls.clear(); prFgdPxls.clear();
|
|
|
|
isInitialized = false;
|
|
rectState = NOT_SET;
|
|
lblsState = NOT_SET;
|
|
prLblsState = NOT_SET;
|
|
iterCount = 0;
|
|
}
|
|
|
|
void GCApplication::setImageAndWinName( const Mat& _image, const string& _winName )
|
|
{
|
|
if( _image.empty() || _winName.empty() )
|
|
return;
|
|
image = &_image;
|
|
winName = &_winName;
|
|
mask.create( image->size(), CV_8UC1);
|
|
reset();
|
|
}
|
|
|
|
void GCApplication::showImage() const
|
|
{
|
|
if( image->empty() || winName->empty() )
|
|
return;
|
|
|
|
Mat res;
|
|
Mat binMask;
|
|
if( !isInitialized )
|
|
image->copyTo( res );
|
|
else
|
|
{
|
|
getBinMask( mask, binMask );
|
|
image->copyTo( res, binMask );
|
|
}
|
|
|
|
vector<Point>::const_iterator it;
|
|
for( it = bgdPxls.begin(); it != bgdPxls.end(); ++it )
|
|
circle( res, *it, radius, BLUE, thickness );
|
|
for( it = fgdPxls.begin(); it != fgdPxls.end(); ++it )
|
|
circle( res, *it, radius, RED, thickness );
|
|
for( it = prBgdPxls.begin(); it != prBgdPxls.end(); ++it )
|
|
circle( res, *it, radius, LIGHTBLUE, thickness );
|
|
for( it = prFgdPxls.begin(); it != prFgdPxls.end(); ++it )
|
|
circle( res, *it, radius, PINK, thickness );
|
|
|
|
if( rectState == IN_PROCESS || rectState == SET )
|
|
rectangle( res, Point( rect.x, rect.y ), Point(rect.x + rect.width, rect.y + rect.height ), GREEN, 2);
|
|
|
|
imshow( *winName, res );
|
|
}
|
|
|
|
void GCApplication::setRectInMask()
|
|
{
|
|
CV_Assert( !mask.empty() );
|
|
mask.setTo( GC_BGD );
|
|
rect.x = max(0, rect.x);
|
|
rect.y = max(0, rect.y);
|
|
rect.width = min(rect.width, image->cols-rect.x);
|
|
rect.height = min(rect.height, image->rows-rect.y);
|
|
(mask(rect)).setTo( Scalar(GC_PR_FGD) );
|
|
}
|
|
|
|
void GCApplication::setLblsInMask( int flags, Point p, bool isPr )
|
|
{
|
|
vector<Point> *bpxls, *fpxls;
|
|
uchar bvalue, fvalue;
|
|
if( !isPr )
|
|
{
|
|
bpxls = &bgdPxls;
|
|
fpxls = &fgdPxls;
|
|
bvalue = GC_BGD;
|
|
fvalue = GC_FGD;
|
|
}
|
|
else
|
|
{
|
|
bpxls = &prBgdPxls;
|
|
fpxls = &prFgdPxls;
|
|
bvalue = GC_PR_BGD;
|
|
fvalue = GC_PR_FGD;
|
|
}
|
|
if( flags & BGD_KEY )
|
|
{
|
|
bpxls->push_back(p);
|
|
circle( mask, p, radius, bvalue, thickness );
|
|
}
|
|
if( flags & FGD_KEY )
|
|
{
|
|
fpxls->push_back(p);
|
|
circle( mask, p, radius, fvalue, thickness );
|
|
}
|
|
}
|
|
|
|
void GCApplication::mouseClick( int event, int x, int y, int flags, void* )
|
|
{
|
|
// TODO add bad args check
|
|
switch( event )
|
|
{
|
|
case EVENT_LBUTTONDOWN: // set rect or GC_BGD(GC_FGD) labels
|
|
{
|
|
bool isb = (flags & BGD_KEY) != 0,
|
|
isf = (flags & FGD_KEY) != 0;
|
|
if( rectState == NOT_SET && !isb && !isf )
|
|
{
|
|
rectState = IN_PROCESS;
|
|
rect = Rect( x, y, 1, 1 );
|
|
}
|
|
if ( (isb || isf) && rectState == SET )
|
|
lblsState = IN_PROCESS;
|
|
}
|
|
break;
|
|
case EVENT_RBUTTONDOWN: // set GC_PR_BGD(GC_PR_FGD) labels
|
|
{
|
|
bool isb = (flags & BGD_KEY) != 0,
|
|
isf = (flags & FGD_KEY) != 0;
|
|
if ( (isb || isf) && rectState == SET )
|
|
prLblsState = IN_PROCESS;
|
|
}
|
|
break;
|
|
case EVENT_LBUTTONUP:
|
|
if( rectState == IN_PROCESS )
|
|
{
|
|
rect = Rect( Point(rect.x, rect.y), Point(x,y) );
|
|
rectState = SET;
|
|
setRectInMask();
|
|
CV_Assert( bgdPxls.empty() && fgdPxls.empty() && prBgdPxls.empty() && prFgdPxls.empty() );
|
|
showImage();
|
|
}
|
|
if( lblsState == IN_PROCESS )
|
|
{
|
|
setLblsInMask(flags, Point(x,y), false);
|
|
lblsState = SET;
|
|
showImage();
|
|
}
|
|
break;
|
|
case EVENT_RBUTTONUP:
|
|
if( prLblsState == IN_PROCESS )
|
|
{
|
|
setLblsInMask(flags, Point(x,y), true);
|
|
prLblsState = SET;
|
|
showImage();
|
|
}
|
|
break;
|
|
case EVENT_MOUSEMOVE:
|
|
if( rectState == IN_PROCESS )
|
|
{
|
|
rect = Rect( Point(rect.x, rect.y), Point(x,y) );
|
|
CV_Assert( bgdPxls.empty() && fgdPxls.empty() && prBgdPxls.empty() && prFgdPxls.empty() );
|
|
showImage();
|
|
}
|
|
else if( lblsState == IN_PROCESS )
|
|
{
|
|
setLblsInMask(flags, Point(x,y), false);
|
|
showImage();
|
|
}
|
|
else if( prLblsState == IN_PROCESS )
|
|
{
|
|
setLblsInMask(flags, Point(x,y), true);
|
|
showImage();
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
int GCApplication::nextIter()
|
|
{
|
|
if( isInitialized )
|
|
grabCut( *image, mask, rect, bgdModel, fgdModel, 1 );
|
|
else
|
|
{
|
|
if( rectState != SET )
|
|
return iterCount;
|
|
|
|
if( lblsState == SET || prLblsState == SET )
|
|
grabCut( *image, mask, rect, bgdModel, fgdModel, 1, GC_INIT_WITH_MASK );
|
|
else
|
|
grabCut( *image, mask, rect, bgdModel, fgdModel, 1, GC_INIT_WITH_RECT );
|
|
|
|
isInitialized = true;
|
|
}
|
|
iterCount++;
|
|
|
|
bgdPxls.clear(); fgdPxls.clear();
|
|
prBgdPxls.clear(); prFgdPxls.clear();
|
|
|
|
return iterCount;
|
|
}
|
|
|
|
GCApplication gcapp;
|
|
|
|
static void on_mouse( int event, int x, int y, int flags, void* param )
|
|
{
|
|
gcapp.mouseClick( event, x, y, flags, param );
|
|
}
|
|
|
|
int main( int argc, char** argv )
|
|
{
|
|
if( argc!=2 )
|
|
{
|
|
help();
|
|
return 1;
|
|
}
|
|
string filename = argv[1];
|
|
if( filename.empty() )
|
|
{
|
|
cout << "\nDurn, couldn't read in " << argv[1] << endl;
|
|
return 1;
|
|
}
|
|
Mat image = imread( filename, 1 );
|
|
if( image.empty() )
|
|
{
|
|
cout << "\n Durn, couldn't read image filename " << filename << endl;
|
|
return 1;
|
|
}
|
|
|
|
help();
|
|
|
|
const string winName = "image";
|
|
namedWindow( winName, WINDOW_AUTOSIZE );
|
|
setMouseCallback( winName, on_mouse, 0 );
|
|
|
|
gcapp.setImageAndWinName( image, winName );
|
|
gcapp.showImage();
|
|
|
|
for(;;)
|
|
{
|
|
int c = waitKey(0);
|
|
switch( (char) c )
|
|
{
|
|
case '\x1b':
|
|
cout << "Exiting ..." << endl;
|
|
goto exit_main;
|
|
case 'r':
|
|
cout << endl;
|
|
gcapp.reset();
|
|
gcapp.showImage();
|
|
break;
|
|
case 'n':
|
|
int iterCount = gcapp.getIterCount();
|
|
cout << "<" << iterCount << "... ";
|
|
int newIterCount = gcapp.nextIter();
|
|
if( newIterCount > iterCount )
|
|
{
|
|
gcapp.showImage();
|
|
cout << iterCount << ">" << endl;
|
|
}
|
|
else
|
|
cout << "rect must be determined>" << endl;
|
|
break;
|
|
}
|
|
}
|
|
|
|
exit_main:
|
|
destroyWindow( winName );
|
|
return 0;
|
|
}
|